[MERGE] mail, mass_mailing(_sms): split mail and sms marketing activities in systray

PURPOSE

mass_mailing and mass_mailing_sms activities are grouped as 1 item in the systray due to them using the same model name (sms inherits and distinguishes itself with a different field.Selection value). This is confusing behavior because they are 2 separate modules and the default icon ends up mismatching the sms-related activities.

SPECIFICATIONS

Split mass_mailing and mass_mailing_sms activities into 2 separate items in systray. Additionally, make it so when mass_mailing and mass_mailing_sms activities are clicked on, only the relevant activities are shown to prevent confusion. In order to only show relevant activities, an optional "domain" check is needed in __systray_activity_menu.js__ for when overriding _systray_get_activities_ methods provide a domain to apply.

Task: 2169498
PR #43272

Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>